Lubricating device



LUBRICATING UEWCE F|LED Nov. I7. 1921 BERNARD H. SHBRWOOD, Oli' WORCESTER, lYIASFSACSE'I.

"LUBBIATll'E-i DEVICE.

Application led November 1'?, 1821. Serial No. 515 791.

To @ZZ who/m t may concern.'

Be it known that l, Benussi,- woon, a citizen of the United States, resid ing at l/Vorcester, in the county of Worces ter and State of Massachusetts, have inventq ed new and useful lmprovements in Lubricating Devices, of which the following is a speciiication.

rllhis invention relates to a lubricating device and has for its object Ato provide a mechanism which may be employed connection with bearings of various types for the purpose of positively forcing the lubricating oil to the bearing surfaces thereof.

l lt is still further an object of the invention to so construct the device that it may also be employed in removing from the bearing grease which has become impregnated with dirt. i

The invention consists in the combination and arrangement of parts set forth in the following specification and particularly pointed out in the claims thereof.

Referring to the drawings:

Figure 1 represents a side elevation of an automobile spring of well known type, the same being equipped with a plurality of lubricating devices embodying my invention. i

Fig. 2 is a vertical section partly in elevation taken on the line 2 2 of Fig. 1 and illustrating the manner of employing a lubricating device embodying the invention upon a spring shackle.

Like numerals refer to like parts throughout the several views of the drawings.

ln the drawings, A and B represent the members of a vehicle spring of well known type7 and C a portion of a vehicle frame to which said members A and B are attached at a and b respectively in a manner well known to those skilled in the art, while adjacent end portions c and d of the members A and B are secured together through the medium of a shackle D. rl`he shackle D comprises a pair of side plates 5 between which extend bolts 6, and the end portions c and d of the spring members A and B respectively are mounted upon said bolts 6 in the usual well known manner. The bolts `6 each embody therein a main body portion 7 constituting a bearing member having a head 8 formed integral therewith at one end thereof, while at its other end a nut 9 has screw-threaded engagement therewith.

rlhe foregoing parts are all old and well known in the art, the present invention residing in a, new and im f lubricating the at bolts 6 and the ends mounted thereon. the bolt 6 from one end t cel lassage 10. Upon the i. f bolt 6 a suitable oil channel which is connected by pass cylindrical passage 10. i ho lil has screw-threaded eng end of the bolt 6 thereby` c end ofthe passage and foi. for a plunger rod le. cured to the plunger rod i while upon the inner end t.

16 is provided which has sliding;I with the wall of the passage 1l). surrounds the rod f engaging the plung engages the screw plug 13 the holding the plunger in the po. i trated in Fig. 2 with the handle 1 against the screw plug 155. l wpassagie constitutii an oil inlet extends through tue head 8 of the bolt 6 and connects with the passage 10.; while another pass e tends through the screw plug and con* nects with the passage 10 and constitutes a discharge passage for old grease which has become mined with dirt and-which may have oozed from the oil channel 11 through the passage 12 into the passage 10.

The general opera .on ofthe device is follows z-lfhen it is desired to lubricate the adjacent surfaces of the bolt 6 and spi f member mounted thereon the har e 15 is pulled outwardly until the plung 16 has passed beyond the inn end of the inlet passage 18. liubricati oil is then inserted into the passage 18 and said oil flows downwardly through said passage into the pussage 10 in front of the plunger 16. 1When suliicient oil has been inserted, the handle 15 is releasedl1 and the spring 17 then forces the plunger 16 forwardly in the passage lo and positively forces the oil outwardlyY through the passage 12 into the oil channel 11 from which it gradually oozes around the periphery of the bolt. During the subsequent use of the device, if oil with dirt mired therewith oozes inwardly through the passage 12 into the passage l() at the rear of the plunger 16 this old grease will be forced rearwardly by the plunger when the latter is again pulled outwardly for the p pose of inserting a fresh supply of oil and l i) een llO will ultimately be forced outwardly through 'the discharge passage 19. The, plunger, iherel'ore, serves in the double capacity or 'forcing the fresh oil inwardly and forcing the old grease outwardly.

lmbricatingdevices enolbodying.;` this invention are particularly effective in cold weather when the oil does not flow -l'reely or when a particularly heavy oil is utilized.

lt evident. that the device may be einloloyed in diflerent types of bearings and in connection with shafts or studsfr or any other members upon which another member is adapted to rotate. or have a beari 07, or upon which another member requiring lubri* caton ia mounted.

l claim:

l. lu combination. a bearing member provided with a cylindrical bore haring; au oil inlet and an oil discharye passage coniinunieating therewithj said borealso communicatino` with the periphery of said bearingV member, a screw plug closing,l the entrance to said bore, a rod slidably mounted in said screw plug, a plunger 'tastto .said rod and located within said bore and a spring` surrounding said rod and forcing said plunger and. rod inwardly within said bore, said. plunger during its outward movement being adapted to force grease located within said bore at the rea-r of said plunger outwardly through said discharge passage.

2. ln combination, a bearing; member broy vided with a. cylindrical bore having an oil inlet and an oil discharge passage couiniunicating therewith, said bore also courv municating with the periphery ol said bearing member, a screw plug closing' the entra-nce to said bore, a` rod alidably mounted in said screw' plug, av plunwerast to said rod and loc-ated within said bore.l ay spring surrounding said rod and forcing said plunger and rod inwardly within said bore and a handle last at the outer end of said. rod whereby said plunger may be pulled outwardly and grease within said bore may be 4forced voutwardly through ,said discharge passage. v

3. A spring shackle comprising a pair orf side plates, bolts'mounted in said side plates and havingthe-endsoif leal1 springs mounted thereon9 eaehbolt being provided with a. bore therein communicating with the periphery thereof, said bolt also being' provided with an inlet passage-eoinniunicating with said borej a screw plug,` located at the outer end oli said bolt and having; a discharge passage coniznuuicatingv with said bore, a rod .slidably mounted in said screw plug, a plunger fast to said rod andlocated within said bore and aspring surrounding said rod and normally forcing said plun `ejer and rodinwardly within said bore, said plunger being adapted to dforce grease `loe-ated within said-bore at the rear of said plunger outwardly through said discharge passage.

In testimony whereof l havehereunto set my hand in presence of two subscriloing` witnesses. l

BERNARD H. SHERWVUD.

lVitnesses FRANKLIN lll; Low, `HAZEL F. LA MUDGn 

